Table 2.

Adverse Events Separated by Treatment Group

Placebo (N = 18)Metformin (N = 19)
Total no. of adverse events reported128
Total no. of serious adverse events reported21
Total no. of hospitalizations43
Proportion reporting at least one adverse event, no. [% (95% CI)]7 [39 (14–64)]8 [42 (18–67)]
Proportion reporting at least one serious adverse event, no. [% (95% CI)]1 [6 (<1–17)]1 [5 (<1–16)]
Proportion with adverse event related to treatment, no. [% (95% CI)]3 [17 (<1–36)]3 [16 (<1–34)]
Severe hypoglycemia
 Subjects with at least one event, no. [% (95% CI)]00
Diabetic ketoacidosis
 Subjects with at least one event, no. [% (95% CI)]01 [5 (<1–16)]
Gastrointestinal events
 Subjects with at least one event, no. [% (95% CI)]5 [28 (5–51)]5 [26 (5–48)]
Liver enzymes, % (95% CI)
 ALT, % >1.5-fold upper limit of normal00
Serum creatinine, % (95% CI)
 Proportion above upper limit of normal00
Lactic acidosis, % (95% CI)
 Proportion with detected lactic acidosis00
Placebo (N = 18)Metformin (N = 19)
Total no. of adverse events reported128
Total no. of serious adverse events reported21
Total no. of hospitalizations43
Proportion reporting at least one adverse event, no. [% (95% CI)]7 [39 (14–64)]8 [42 (18–67)]
Proportion reporting at least one serious adverse event, no. [% (95% CI)]1 [6 (<1–17)]1 [5 (<1–16)]
Proportion with adverse event related to treatment, no. [% (95% CI)]3 [17 (<1–36)]3 [16 (<1–34)]
Severe hypoglycemia
 Subjects with at least one event, no. [% (95% CI)]00
Diabetic ketoacidosis
 Subjects with at least one event, no. [% (95% CI)]01 [5 (<1–16)]
Gastrointestinal events
 Subjects with at least one event, no. [% (95% CI)]5 [28 (5–51)]5 [26 (5–48)]
Liver enzymes, % (95% CI)
 ALT, % >1.5-fold upper limit of normal00
Serum creatinine, % (95% CI)
 Proportion above upper limit of normal00
Lactic acidosis, % (95% CI)
 Proportion with detected lactic acidosis00
Table 2.

Adverse Events Separated by Treatment Group

Placebo (N = 18)Metformin (N = 19)
Total no. of adverse events reported128
Total no. of serious adverse events reported21
Total no. of hospitalizations43
Proportion reporting at least one adverse event, no. [% (95% CI)]7 [39 (14–64)]8 [42 (18–67)]
Proportion reporting at least one serious adverse event, no. [% (95% CI)]1 [6 (<1–17)]1 [5 (<1–16)]
Proportion with adverse event related to treatment, no. [% (95% CI)]3 [17 (<1–36)]3 [16 (<1–34)]
Severe hypoglycemia
 Subjects with at least one event, no. [% (95% CI)]00
Diabetic ketoacidosis
 Subjects with at least one event, no. [% (95% CI)]01 [5 (<1–16)]
Gastrointestinal events
 Subjects with at least one event, no. [% (95% CI)]5 [28 (5–51)]5 [26 (5–48)]
Liver enzymes, % (95% CI)
 ALT, % >1.5-fold upper limit of normal00
Serum creatinine, % (95% CI)
 Proportion above upper limit of normal00
Lactic acidosis, % (95% CI)
 Proportion with detected lactic acidosis00
Placebo (N = 18)Metformin (N = 19)
Total no. of adverse events reported128
Total no. of serious adverse events reported21
Total no. of hospitalizations43
Proportion reporting at least one adverse event, no. [% (95% CI)]7 [39 (14–64)]8 [42 (18–67)]
Proportion reporting at least one serious adverse event, no. [% (95% CI)]1 [6 (<1–17)]1 [5 (<1–16)]
Proportion with adverse event related to treatment, no. [% (95% CI)]3 [17 (<1–36)]3 [16 (<1–34)]
Severe hypoglycemia
 Subjects with at least one event, no. [% (95% CI)]00
Diabetic ketoacidosis
 Subjects with at least one event, no. [% (95% CI)]01 [5 (<1–16)]
Gastrointestinal events
 Subjects with at least one event, no. [% (95% CI)]5 [28 (5–51)]5 [26 (5–48)]
Liver enzymes, % (95% CI)
 ALT, % >1.5-fold upper limit of normal00
Serum creatinine, % (95% CI)
 Proportion above upper limit of normal00
Lactic acidosis, % (95% CI)
 Proportion with detected lactic acidosis00
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